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Experimental Study on the Reaction Zone Distribution of Impact‐Induced Reactive Materials
Author(s) -
Feng Shunshan,
Wang Chenglong,
Huang Guangyan
Publication year - 2017
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201600274
Subject(s) - materials science , reaction rate , activation energy , composite material , work (physics) , combustion , chemical engineering , chemistry , catalysis , thermodynamics , organic chemistry , physics , engineering
The energy release behaviors of a metal‐fluoropolymer composite impact‐induced reactive material (IRM) under high dynamic impact loading were investigated using a new partition pressure test and the multipoint pressure test. The results indicated that a reverse reaction zone and a subsequent reaction zone were formed along the impact direction as the IRM impacted on an aluminum plate at the velocity of 1050–1450 m s −1 . The total energy release increased with the increase of impact velocity and the energy released from the impact reaction of IRM in the reverse reaction zone was only 20–30 % of the total energy. Most energy release occurred in the subsequent reaction zone, which was composed of an impact decomposition reaction zone, a thermal decomposition reaction zone and a combustion reaction zone. Three IRM including Al/PTFE, Mg/PTFE, and Ti/PTFE were tested. The Ti/PTFE was most sensitive to the impact velocity, but exhibited the lowest energy release rate. The energy release from the impact reaction of Mg/PTFE was mainly due to the combustion reaction. The high energy release of Al/PTFE was mainly from deflagration reaction. This work provides experimental methods and data for the formulation and evaluation of IRM in engineering applications.